Thermal crack control design of massive concrete structures | |
| Author | Nutchanart Manathanya |
| Call Number | AIT Thesis no. ST-98-27 |
| Subject(s) | Concrete--Cracking Thermal stresses |
| Note | A thesis submitted in partial fulfillment of the requirements for the Master Degree of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | A study is carried out to discuss the effectiveness of the coupling of multi-component hydration heat model and thermal stress analysis in order to compare different kinds of powder materials and mix proportions. Then the risk of occurrence of thermal cracking in mass concrete structures is assessed. The risk is associated with thermal crack index, which is the ratio of tensile strength of concrete to principal tensile stress due to thermal induction. The tensile strength of concrete is computed from compressive strength of concrete, which in turn is evaluated by hydration heat model. The original model developed by Kishi (1996) is modified by incorporating Abram's water cement ratio law, without changing the basic approach. The modified model is operated on data from Tahir and Pichai (1998) and gives a good agreement with experimental results over a wide range of water-binder ratio, fly ash binder ratio and type of fly ash. The modified model is employed in Nonlinear Finite Element analysis to evaluate thermal crack index, and the results are finally applied to a real structure. |
| Year | 1998 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Kishi, Toshiharu; |
| Examination Committee(s) | Worsak Kanok-Nukulchai;Wijeyewickrema, Anil C.; |
| Scholarship Donor(s) | Asian Institute of Technology Partial Scholarship |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1998 |